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math.AC2006
Tetrahedral curves via graphs and Alexander duality
Christopher A. Francisco
A tetrahedral curve is a (usually nonreduced) curve in P^3 defined by an unmixed, height two ideal generated by monomials. We characterize when these curves are arithmetically Cohe…
math.AC2006★ 8 cited
Whiskers and sequentially Cohen-Macaulay graphs
Christopher A. Francisco, Huy Tai Ha
Let G be a simple (i.e., no loops and no multiple edges) graph. We investigate the question of how to modify G combinatorially to obtain a sequentially Cohen-Macaulay graph. We foc…